اعرفي طريقة الاسئلة + احفظي بعض الكلمات من قائمة المفردات اللغوية في الامتحان + تدربي على حل مسائل احصاء بسرعه بديهية مو بقوانين وراح تجيبي درجة طيبة ان شاء الله
If there's a way you can avoid the exam, do it-- I'm just being practical. Otherwise, you need a 6-month-window of time to get fully prepared for it, and I suggest that you get enrolled into Kaplan GRE courses for that purpose. Luck!
The 50th percentile, or an “average score,” on the GRE is around a 149-151, depending on whether you're looking at the quantitative or verbal section.[gre.kaptest.com]